Fix Android build on RN 0.57.0:

- Use gradle project settings to set versions
- Allow a custom accountKitSdkVersion from project settings
- Update account-kit to the latest version

android/build.gradle

@@ -1,15 +1,25 @@
 apply plugin: 'com.android.library'
 
+def DEFAULT_COMPILE_SDK_VERSION             = 27
+def DEFAULT_BUILD_TOOLS_VERSION             = "27.0.3"
+def DEFAULT_MIN_SDK_VERSION                 = 16
+def DEFAULT_TARGET_SDK_VERSION              = 26
+def DEFAULT_SUPPORT_LIB_VERSION             = "27.1.1"
+def DEFAULT_ACCOUNT_KIT_VERSION             = "4.36.0"
+
+def SUPPORT_LIB_VERSION = rootProject.hasProperty('supportLibVersion') ? rootProject.supportLibVersion : DEFAULT_SUPPORT_LIB_VERSION
+def ACCOUNT_KIT_VERSION = rootProject.hasProperty('accountKitSdkVersion') ? rootProject.accountKitSdkVersion : DEFAULT_ACCOUNT_KIT_VERSION
+
+
 android {
-    compileSdkVersion 27
-    buildToolsVersion "27.0.3"
+    compileSdkVersion rootProject.hasProperty('compileSdkVersion') ? rootProject.compileSdkVersion : DEFAULT_COMPILE_SDK_VERSION
+    buildToolsVersion rootProject.hasProperty('buildToolsVersion') ? rootProject.buildToolsVersion : DEFAULT_BUILD_TOOLS_VERSION
 
     defaultConfig {
-        minSdkVersion 16
-        targetSdkVersion 27
-        versionCode 1
-        versionName "1.0"
+        minSdkVersion rootProject.hasProperty('minSdkVersion') ? rootProject.minSdkVersion : DEFAULT_MIN_SDK_VERSION
+        targetSdkVersion rootProject.hasProperty('targetSdkVersion') ? rootProject.targetSdkVersion : DEFAULT_TARGET_SDK_VERSION
     }
+
     buildTypes {
         release {
             minifyEnabled false
@@ -19,8 +29,10 @@ android {
 }
 
 dependencies {
-    compile 'com.facebook.react:react-native:+'
-    compile ('com.facebook.android:account-kit-sdk:4.23.0'){
+    implementation 'com.facebook.react:react-native:+'
+    implementation "com.android.support:appcompat-v7:${SUPPORT_LIB_VERSION}"
+    implementation "com.android.support:design:${SUPPORT_LIB_VERSION}"
+    implementation ("com.facebook.android:account-kit-sdk:${ACCOUNT_KIT_VERSION}"){
         exclude group: 'com.parse.bolts', module: 'bolts-android';
         exclude group: 'com.parse.bolts', module: 'bolts-applinks';
         exclude group: 'com.parse.bolts', module: 'bolts-tasks';